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Force
- A force is defined as an influence which changes, or tries to change, the state of motion of a body or the shape or size of a body.
- The SI unit for force is the newton (N).
- Some common types of forces are gravitational force (weight), friction, tension, normal contact force and upthrust.
Contact & Non-Contact Forces
Forces can be classified into two types:
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- non-contact forces, which do not require objects to be in contact to exist; and
- contact forces, which exist between objects that are in contact.
| Examples of Contact Forces |
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| Examples of Non-Contact Forces |
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